259 
of pinna, sorus on upper side of costa shortest at the base; in- 
dusium broad, conspicuous, dark brown. 
This species is intermediate between B. nitidum Presl. and B. 
Finlaysonianum Wall. It differs from B. nitidum by its much 
larger size, longer stipes thickly clothed with black scales, reduced 
lower pinnae and fully pinnate character. It resembles B. witidum 
in general cutting of frond, in having undulato-dentate pinnae and 
a conspicuous indusium. It comes nearest B. Finlaysonianum in 
size, but differs in color and vestiture of stipes, narrower pinnae 
which are connected in upper part of frond, serrate edges and less 
reduced lower pinnae. 
Growing in running water, Colapampa. Collected July 4, 
1894 (2314). , | 
DRYOPTERIS VILLOSA INAEQUALIS Nn. var. 
_ Frond 1-1% ft. long, tripinnatifid, pinnae on one side 6-10 
in. long, 2-31/ in. wide; on the other side 3-5 in. long, 34-114 in. 
wide; stipes and rachis very scaly to within 6,in. of tip of frond; 
Sori small, indusium inconspicuous. ; 
This differs from the type by its much smaller size, by its very 
unequal pinnae on the two sides of the rachis, by having nearly 
the entire stipes and rachis scaly as well as pubescent, the sori 
few in number and smaller and the indusium much less prominent. 
Had there been but one frond of the Dryopteris, it might possibly 
have been looked upon as an abnormal form of D. villosa; but 
there were two separate fronds, both of them identical in character, 
and it seems quite certain that they may be regarded asa true 
Variation from the original type. Uchimachi, Yungas, August 
22, 1894. Growing in wet mould, forest-shade (2394). 
Three new Ferns from Jamaica. 
By B. D. GILBERT. 
ASPLENIUM BIANTHEMUM DP. SP. 
. . late dull 
Caudex very small, crowned with short ovate lanceo t 
brown or almost black scales; stipes 4 to I i. ar pci! 
pubescent; rachis green-margined throughout, cutee rid % to 
the frond and proliferous at summit ; fr ond 3 has nso Mag size | 
34 in. wide in middle of frond, pinnae gradually dec sg ren pei 
